Try Our New BETA Version
(navigation image)
Home Animation & Cartoons | Arts & Music | Community Video | Computers & Technology | Cultural & Academic Films | Ephemeral Films | Movies | News & Public Affairs | Prelinger Archives | Spirituality & Religion | Sports Videos | Television | Videogame Videos | Vlogs | Youth Media
Search: Advanced Search
Anonymous User (login or join us)

View movie

item imageitem imageitem imageitem image

View thumbnails
Run time: 19 minutes 15 seconds

Play / Download (help[help])

(77.1 M)Ogg Video
(77.6 M)512Kb MPEG4
(930.5 M)MPEG2

All Files: HTTPS Torrent (2/0)



United States Department of DefenseOperation HARDTACK Military Effects Studies: Underwater Tests (1958)

something has gone horribly wrong 8-p
Prefer flash? · Embed · Questions/Feedback?

Operation HARDTACK I consisted of 35 nuclear tests conducted at the Pacific Proving Ground between April 28 and August 18, 1958. These tests included balloon, surface, barge, underwater, and rocket-borne high-altitude tests. The first test, Yucca, was a nuclear device attached to a helium balloon launched from the USS Boxer near Enewetak Atoll.

HARDTACK I consisted of three portions; the first was the development of nuclear weapons. This was a continuation of the type of testing conducted at Enewetak and Bikini during the early and mid-1950s. In these tests, the weapons development laboratories, Los Alamos Scientific Laboratory and the University of California Radiation Laboratory (later named Lawrence-Livermore National Laboratory), detonated their experimental devices, while the Department of Defense (DoD) provided support and conducted experiments that did not interfere with Atomic Energy Commission activities.

The second portion, sponsored by the DoD, consisted of the underwater tests Wahoo and Umbrella. Wahoo was detonated in the deep, open ocean southwest of Boken Island, and Umbrella inside the western end of the lagoon at Enewetak. The purpose of these tests was to improve the understanding of the effects of underwater explosions on Navy ships and material. These were continuations of earlier underwater testing that included Baker in CROSSROADS at Bikini in 1946 and WIGWAM off the U.S. West Coast in 1955.

The DoD also sponsored the third portion, addressing the military problems of air-borne nuclear weapon defense. Three high-altitude tests featured rocket-borne Teak and Orange at Johnston Island and balloon-hoisted Yucca between Enewetak and Bikini.

Two major aspects of HARDTACK I's experimental program were the development of the weapons themselves and the measurement of the explosive and radiation effects. Also, since the development of a nuclear armed fleet ballistic missile was on a fast track, a portion of HARDTACK I was devoted to testing the warhead for the Polaris missile.

The tests comprising the 1958 Operation HARDTACK I were as follows:

YUCCA, April 28, Pacific (between Enewetak and Bikini), balloon, weapons effects, 1.7 kilotons (kt)
CACTUS, May 5, Enewetak, surface, weapons related, 18 kt
FIR, May 11, near Bikini, barge, weapons related, 1.36 megatons (Mt)
BUTTERNUT, May 11, near Enewetak, barge, weapons related, 81 kt
KOA, May 12, Enewetak, surface, weapons related, l.37 Mt
WAHOO, May 16, near Enewetak, underwater, weapons effects, 9 kt
HOLLY, May 20, near Enewetak, barge, weapons related, 5.9 kt
NUTMEG, May 21, near Bikini, barge, weapons related, 25.1 kt
YELLOWWOOD, May 26, near Enewetak, barge, weapons related, 330 kt
MAGNOLIA, May 26, near Enewetak, barge, weapons related, 57 kt
TOBACCO, May 30, near Enewetak, barge, weapons related, 11.6 kt
SYCAMORE, May 31, near Bikini, barge, weapons related, 92 kt
ROSE, June 2, near Enewetak, barge, weapons related, 15 kt
UMBRELLA, June 8, near Enewetak, underwater, weapons effects, 8 kt
MAPLE, June 10, near Bikini, barge, weapons related, 213 kt
ASPEN, June 14, near Bikini, barge, weapons related, 319 kt
WALNUT, June 14, near Enewetak, barge, weapons related, 1.45 Mt
LINDEN, June 18, near Enewetak, barge, weapons related, 11 kt
REDWOOD, June 27, near Bikini, barge, weapons related, 412 kt
ELDER, June 27, near Enewetak, barge, weapons related, 880 kt
OAK, June 28, near Enewetak, barge, weapons related, 8.9 Mt
HICKORY, June 29, near Bikini, barge, weapons related, 14 kt
SEQUOIA, July 1, near Enewetak, barge, weapons related, 5.2 kt
CEDAR, July 2, near Bikini, barge, weapons related, 220 kt
DOGWOOD, July 5, near Enewetak, barge, weapons related, 397 kt
POPLAR, July 12, near Bikini, barge, weapons related, 9.3 Mt
SCAEVOLA, July 14, near Enewetak, barge, safety experiment, zero yield
PISONIA, July 17, near Enewetak, barge, weapons related, 255 kt
JUNIPER, July 22, near Bikini, barge, weapons related, 65 kt
OLIVE, July 22, near Enewetak, barge, weapons related, 202 kt
PINE, July 26, near Enewetak, barge, weapons related, 2 Mt
TEAK, August 1, off Johnston Island area, rocket, weapons effects, 3.8 Mt
QUINCE, August 6, Enewetak, surface, weapons related, zero yield
ORANGE, August 12, off Johnston Island area, rocket, weapons effects, 3.8 Mt
FIG, August 18, Enewetak, surface, weapons related, 20 tons

Ray Walston narrated this film. Ray Walston was a high profile Hollywood (as well as Broadway) personality to be credited with top secret security clearance to document nuclear weapons development for the U.S. military.

The purpose of this documentary film was to report the results of nuclear weapons detonations experiments applied under an overall joint task force operation codenamed Operation HARDTACK I. Carefully screened members of only applicable committee members of Congress saw this film report, as well as need-to-know employees of the Department of Defense and appropriate executives of the White House.

Periods of silence during this film were strictly intended. This film was carefully sanitized by nuclear weapons experts and Department of Defense officials to remove secret information.

Observers of this film cannot reasonably demand more in quality for this film, and the public is fortunate just to be able to see these films. This film release was not designed to present this film without flaws due to aging and the notorious instability of its original Kodachrome I color film stock. This secret film has been sanitized, with secret portions removed, after the complete version was locked away for decades in top secret vaults, where the unsanitized version remains to this day. The celluloid version of these films are increasingly brittle and very few people have security clearances to view the unedited versions that contain jealously guarded secrets to this day.

The pale, yellow banding was caused by a persistent technical error of the Department of Energy in transcribing from the sanitized Betacam SP master copy's colorspace to VHS format.

The blurriness of Kodachrome I films was attributed to the immense grain of very slow 16 mm ISO 10 color film, as well as the bleeding of dyes in the celluloid. These films were so slow that night scenes had to be simulated using blue filters in daylight. Blue dyes were the least sensitive to light in this stock, and therefore simulated darkness using blue filters. Notice in 1950s cowboy films that night scenes contained long shadows and bright highlights from sunshine, due to this technique of low light simulation required by Kodachrome I.

Related sites:

This movie is part of the collection: Community Video

Producer: United States Department of Defense
Production Company: Lookout Mountain Laboratory USAF, Hollywood, California
Sponsor: Defense Atomic Support Agency
Audio/Visual: Mono PCM, faded color, originated from unstable pigments in 16 mm Kodachrome I celluloid stocks of the time
Language: English
Keywords: Operation Hardtack; Hardtack; atomic; nuclear; Cold War; atomic testing; nuclear testing; 1958; military; Eniwetok; Enewetak; Eniwetak; Bikini; Bikini Atoll; Pacific Proving Ground; national defense; Department of Defense; Department of Energy; radiation; radioactivity; fallout; radioactive; thermonuclear test; thermonuclear
Contact Information: For further questions and answers, please visit the Atomic Forum: The purpose of the Atomic Forum is to objectively discuss, learn, and archive information related to nuclear weapons development, past and present.

Creative Commons license: Attribution-NonCommercial-NoDerivs

Individual Files

Movie Files Animated GIF MPEG2 Ogg Video Thumbnail 512Kb MPEG4
OperationHARDTACK_UnderwaterTests1958.mpeg 269.1 KB 
930.5 MB 
77.1 MB 
7.3 KB 
77.6 MB 
Information FormatSize
OperationHARDTACK_UnderwaterTests1958_files.xml Metadata [file] 
OperationHARDTACK_UnderwaterTests1958_meta.xml Metadata 9.8 KB 
OperationHARDTACK_UnderwaterTests1958_reviews.xml Metadata 2.9 KB 
Other Files Archive BitTorrent
OperationHARDTACK_UnderwaterTests1958_archive.torrent 23.4 KB 

Write a review
Downloaded 20,409 times
Average Rating: 3.00 out of 5 stars3.00 out of 5 stars3.00 out of 5 stars

Reviewer: Kevin VandeWettering - 2.00 out of 5 stars2.00 out of 5 stars - October 14, 2007
Subject: Not a valid license
No restoration doesn't qualify for copyright protection. It would have to be a derivative work that shows CREATIVITY. Merely digitizing a work is not a creative process and therefore would not qualify.

Reviewer: MackBolan - - July 12, 2007
Subject: Hey Graviton...
What happened to's discussion forums? I've been off the net for 2 months and when I went back today I noticed it was closed. Not even an archive. Tsar doesn't seem to be answering emails either. Your name was one of the few that I remember. Always enjoyed your posts.

Mack Bolan
Reviewer: GravitonUSA - 4.00 out of 5 stars4.00 out of 5 stars4.00 out of 5 stars4.00 out of 5 stars - June 23, 2007
Subject: Warning
Alexvon, you are incorrect, and you are not truthful about the law. If you did ANY research, the FACTS list that ONLY the TAPE CARTRIDGES provided from the government are protected by Public Domain. The digitization of these tapes is considered restoration and therefore transfers all rights to the digitizer. These films and are NOT under Public Domain.
Email the Department of Energy to prove to yourself that digitizations and are not Public Domain.
Alexvon is not telling the truth.
Don't listen to Alex rant about something about which he lies. Prove it to yourself and email the Department of Energy address provided.
Reviewer: alexvon - - June 23, 2007
Subject: should be public domain!
i have noticed a trend on many of thes films that are us government (military) sponsored that are being labeled non-comm. no derivitaves, etc. etc.

as far as my knowledge on public domain materials is if it was produced by the us govt then it is public domain. no others can hold a license to these materials.

any thoughts or corrections?

graviton is wrong. the copying of public domain materials does not give a new copyright protection. go to the us gove copyright website and read for yourself. sweat of the brow or mechanical reproduction does not warrant copyright protection.


The license holder of this film insists that any site (or individuals) linking or independently displaying through any Internet protocol to this film, to visibly, clearly and fully credit in text this site [] on any pages linked, for providing this film: "Provided by the Atomic Forum"

Terms of Use (31 Dec 2014)